Abrasion resisting alloy



Patented Dec. 30, 1941 ABRASION ansrs'rmo ALLOY Robert W. Schlumpf, Houston, 'lem, minor to Hughes Tool Company, Houston, Tex; a corporation of Delaware No Drawing. Application November 10, 1941,

Serial No. 418,595

2 Claims.

Per cent Carbon 1.50-4.00 Manganese 1.00-3.00 Silicon 0.50-2.50 Chromium 3.00-7.00 Molybdenum 5.00-10.00 Vanadium 1.00-3.00 Boron 0.50-1.50 Iron Balance to make up 100 These ingredients alloyed together within the ranges indicated above will produce a material extremely hard but somewhat brittle. The alloy may be cast but it is not malleable. The ingredients may be mixed approximately within the ranges set out in the above example, and although variance within these limits is not material I have foundthat the following proportion of the ingredients is particularly satisfactory in the production of wear resisting tools or devices:

Per cent Carbon 3.62 Manganese 2.20 Silicon 2.20 Chromium Q. 4.50 Molybdenum 8.20 Vanadium 2.40 Boron 1.00

Iron Balance to make up 100 In the construction of this alloy the various materials in the proportions approximately as indicated are fused together and cast into the form in which they are to be used. The alloy is particularly designed for use in nozzles which are subjected to the action of sand or other similar hard material brought into contact therewith. Sand blast nozzles, in which the sand is forcibly brought into impact with the material of the nozzle, may be made of this material, and it has been found that the alloy will resist wear for a materially longer period of time than other a1- loys now in common use.

What is claimed as new is:

1. A hard abrasion resisting ferrous metal alloy comprising the following ingredients fused together in approximately the proportions stated be ow:

Per cent Carbon 1.50-4.00 Manganese 1.00-3.00 Silicon 050-250 Chromium 3.00-7.00 Molybdenum 5.00-10.00 Vanadium 1.00-3.00 Boron 0.50-1.50 Iron Balance to make up 100 2. A cast ferrous hard metal object made up of ingredients alloyed together in approximately the following proportions:

Per cent Carbon 3.62 Manganese 2.20 Silicon 2.20 Chromium 4.50 Molybdenum 8.20 Vanadium 2.40 Boron 1.00 Iron Ba1ance to make up 00 ROBERT W. SCHLUMPF. 

